Cell protection from stresses by heat shock protein (HSP) was previously attributed to its ability to prevent aggregation and to accelerate refolding of damaged proteins. It plays an important role in cell survival after extremely harsh protein damaging treatment leading to necrotic cell death. On the other hand, protein repair function of HSP cannot explain how it protects cell from stresses which do not cause direct protein damage. These stresses kill cell through activation of apoptotic program. Recently it has been found that HSP can meditate suppression of a stress-activated protein kinase, JNK, an early component of stress-induced apoptotic signaling pathway.These observations can provide a basis for HSP's function of anti-apoptosis.

Cell protection from stresses by heat shock protein (HSP) was previously attributed to its ability to prevent aggregation and to accelerate refolding of damaged proteins. It plays an important role in cell survival after extremely harsh protein damaging treatment leading to necrotic cell death. On the other hand, protein repair function of HSP cannot explain how it protects cell from stresses which do not cause direct protein damage. These stresses kill cell through activation of apoptotic program. Recently it has been found that HSP can meditate suppression of a stress-activated protein kinase, JNK, an early component of stress-induced apoptotic signaling pathway.These observations can provide a basis for HSP's function of anti-apoptosis.

OBJECTIVEThis study aimed to evaluate the influence of loading in different healing periods on implant stability and to establish an animal model of anchorage implant screws.

METHODSAnchorage implant screws were implanted in sheep alveolar bone to establish the implant screw animal model. The animals were randomly divided into four groups: group A, sheep without loading; group B, sheep loaded immediately after implant; group C, sheep loaded after two weeks; and group D, sheep loaded after four weeks. The maxillary and mandibular tissue specimens with implants were dissected. The maxillary tissue specimens were used to make undecalcified bone grinding slices, and the healing mode of the implant-bone interface was observed by light microscope. The maximum shear strength of loose mandibular specimens was measured by a material testing machine. The differences in group data were statistically analyzed. RESULTS 1) A general difference in shear strength exists among the four groups. The shear strengths in groups A and B were lower than those in groups C and D. 2) No significant difference in healing mode was found between the pressure side and the tension side of the longitudinal-grinded bone slices with implants. Both fiber combination and osseointegration of transverse-grinded slices could be found in the interface in all four groups. The major integration mode of the implant-bone interface of groups A and D was osseointegration, whereas that of the implant-bone interface of groups B and C was fibrous tissue transformation. The surrounding bone tissue regenerated toward the implants of group C.

CONCLUSIONResults show that loading time influences the stability of implant anchorage.

Objective To analyze the coverage of iodized salt and the focus population iodine nutrition after implementing new standard of iodized salt in Hainan Province.Methods Eighteen cities (counties,districts) were divided into eastern coastal,western coastal and inland areas according to coastline and terrain of Hainan Province in 2013.One township (town,street) was sampled from each city (county,district) in the east,the west,the south,the north and the center of these areas.Four villages (committees) and 15 households in each village (committee),and 40 children aged 8-10 in one primary school,20 pregnant women and lactating women were sampled from each township (town,street).Iodized salt samples collected from household were monitored by the method of direct titration;random urine samples of children aged 8-10,pregnant woman and lactating woman were tested by arsenic cerium catalytic spectrophotometry.Results Totally 6 310 edible salt samples were tested,and the median of salt iodine was 25.9 mg/kg.The coverage of iodized salt was 97.92％ (6 179/6 310).Residents consumption rate of qualified iodized salt reached 95.47％ (6 024/6 310),and the rate of non-iodized salt was 2.08％ (131/6 310).About 4 444 urine samples of children aged 8-10 were examined,and the median of urinary iodine was 165.4 μg/L,in which suitable urinary iodine (100-199 μg/L) accounted 49.3％ (2 194/4 444);about 1 286 urine samples of lactating woman were examined,the median of urinary iodine was 122.3 μg/L,≥ 100 μg/L was 60.6％ (779/1 286);about 813 urine samples of pregnant woman were examined,the median of urinary iodine was 126.6 μg/L,59.6％ (485/ 813) of this group were urinary iodine deficiency (＜ 150 μg/L).There were significant differences between the three groups in the east,the middle and the west areas of Hainan Province (children:176.7,147.7,158.0 μg/L,lactating women:148.7,108.7,106.7 μg/L,pregnant women:146.7,108.0,147.1 μg/L,H =34.70,26.76,35.95,all P ＜ 0.01).Conclusion The results have showed that pregnant woman are iodine deficiency,they should be given more iodine.

Objective To define the correlation between nasopharyngeal carcinoma (NPC) cell radiosensitivity and gene mutation in the ATM/PI3K coding region. Methods The gene mutation in the ATM/PI3K region of nasopharyngeal carcinoma cell lines which vary in radiosensitivity,was monitored by reverse transcription polymerase chain reaction (RT PCR) and fluorescence marked ddNTP cycle sequencing technique.Results No gene mutation was detected in the ATM/PI3K region of either CNE1 or CNE2.Conclusion Disparity in intrinsic radiosensitivity between different NPC cell lines depends on some other factors and mechanism without being related to ATM/PI3K mutations.

Objective To study the activity and participation status of patients with spinal cord injury or traumatic brain injury. Methods From 2013 to 2016, 60 patients with spinal cord injury and 38 patients with traumatic brain injury were assessed with WHO Disability As-sessment Schedule 2.0 (WHO-DAS 2.0) (International Chinese Version of fully structured interviewer administered 36 questions). Results The patients with traumatic brain injury had moderate dysfunction in domains of cognition and getting along with people, and severe dys-function in other domains. The patients with spinal cord injury had mild dysfunction in domain of cognition, moderate dysfunction in do-mains of self-care and getting along with people, and severe dysfunction in other domains. The dysfunction was severer in domains of cogni-tion and self-care in the patients with traumatic brain injury than in the patients with spinal cord injury (t>2.140, P<0.05). Conclusion The inpatients with spinal cord injury and traumatic brain injury are difficult in mobility, self-care, getting along with people, life activities and participation.

Objective Clinical efficacies of angiogenesis and improvement in lower limb ischemia are compared for the transplantation of both the peripheral blood stem cells(PBSC)and bone marrow stem cells(BMSC).Methods A total of 170 patients suffering from lower limb ischemia who received stem cell transplantation were monitored for random comparison study during September 2004 to October 2006.Among them 94 patients were treated with PBSC and 76 were BMSC.All the clinical data and laboratory findings before and after the transplantation in the 1st.12th and 24th weeks were comprehensively evaluated and tested by SPSS 12.0 software package.Results The total number of MNC,CD34+ cells and CD133+ cells in PBSC group was greatly more than BMSC group and had prominent or very prominent variances(P

Objective To investigate the relationship between acupuncture analgesia and cellular immunity, the acupuncture effect on expression of c fos mRNA, ppENKmRNA,iNOSmRNA and iNOS activity in the mouse peritoneal macrophage were studied. Methods Twenty BALB/c mice were randomly divided into 2 groups:a,the acupuncture group treated with 5Hz electroacupuncture (EA); b, the control group treated with no EA. The pain threshold was detected by K + ionophoresis method before and after EA or restraining. The experiment was performed by using in situ hybridization, NADPH NBT histochemistry, RNA dot blot and protein dot blot techniques. All dot blot signals were scanned for statistical analysis. Results The hybridization signals and iNOS activity appeared as granules in bluish violet color, localized in the cytoplasm of the macrophage. All dot blot signals were increased in the acupuncture group, when compared with those in the control group( P

Objective To study the factors related to hyperuricaemia in type 2 diabetic patients and to investigate the effect of serum uric acid levels on the metabolic syndrome.Methods During March 2007 and March 2008 731 cases were divided into 2 groups according to their uric acid levels,then the relationship between serum uric acid and metabolic parameters and the complications in two groups were observed.Results There was a positive correlation between uric acid levels and triglycerides,body mass index,blood pressure(P